Officials from the Georgia Department of Transportation and the Aerotropolis Community Improvement Districts said they hope to make the I-285 and Camp Creek Parkway interchange easier to navigate.

Their plan is to reconstruct the overpass into a diverging diamond interchange.

The intersection type is in use at Ashford Dunwoody Road and other locations.

When viewed from above, the junction looks like a diamond.

An off-ramp from a freeway allows drivers to turn onto a smaller road, as usual.

What makes a diverging diamond interchange different is the way it handles left turns.

Crossover intersections direct traffic to the left side of the road crossing over the freeway, then to right-hand lanes.

The result is that left turns can be completed without crossing opposing traffic.

“The wonderful thing about diverging diamond interchanges is they reduce the number of conflict points, which reduces the amount of crashes,” department spokeswoman Annalysce Baker said.

Baker said drivers may also see quicker commutes.

She spoke at the department’s recent public information open house for the project at the districts’ office.

Officials there said both I-285 off-ramps to Camp Creek Parkway back up onto I-285 during rush hour.

According to the Atlanta Regional Commission, the backups will only get worse if nothing is done.

The proposed typical section for Camp Creek Parkway will retain its four existing 12-foot travel lanes in each direction.

Improvements along Camp Creek Parkway will also include pedestrian upgrades and lighting on the east side of the interchange.

The project will also include sculptural elements.

The open house featured mock-ups and models of designs incorporating a flock of butterflies taking flight and geometric shapes that evoke a plane taking off.

Kirsten Berry, the districts’ program director, said she wants the artistic elements to represent the area and the community.

“We put out a [request] to three regional artists and they submitted proposals,” she said. “They will be making presentations to a selection panel. We also wanted to give the public a chance to look at the designs so they could provide some feedback and we can incorporate that into our selection process.”

She said the panel will make a decision this fall.

According to the districts’ website, the project will cost $10 million and will begin in 2018.



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